北斗数据质量分析软件设计、实现与分析

Design,Implementation and Analysis of BeiDou Data Quality Analysis Software

数据质量分析是全球卫星导航定位系统(global navigation satellite system,GNSS)数据处理的重要内容,也是保障北斗自动化变形监测等工程应用服务质量的技术基础。本文设计实现了北斗数据质量分析软件BDQA(BeiDou Quality Analysis),并验证了其处理能力。结果表明,BDQA软件处理效率较高,并行处理BJFS等10个国际GNSS服务组织(International GNSS Service,IGS)跟踪站24 h数据的耗时为15 s。在软件可靠性方面,以贵州汪官水库7 d观测数据为对象,BDQA处理水平与Anubis相当,两者处理结果的一致性较高。在实时处理方面,对汪官水库数据采用4 h解模式进行了处理,结果表明该水库北斗数据质量较高,MP2、MP6数值上均小于10 cm,且相对稳定,MP2、MP6时间序列的标准差均小于1 cm,这也反映了该水库北斗测站的观测质量满足高精度、自动化变形监测的实施要求。

Data quality analysis is an important part of GNSS data processing,and also the technical basis to ensure the quality of engineering application services such as BeiDou au⁃tomation deformation monitoring.This paper designs and im⁃plements the BeiDou data quality analysis software BDQA,and verifies its processing capabilities.The results show that the BDQA software has high processing efficiency,and the parallel processing of 24 h data from 10 IGS stations such as BJFS takes 15 s.In terms of software reliability,based on the 7 d observation data of Wangguan Reservoir in Guizhou,the BDQA processing level is equivalent to Anubis,and the con⁃sistency of the two processing results is high.In terms of realtime processing,the data of Wangguan Reservoir is processed using the 4 h solution mode.The results show that the quality of BeiDou data in the reservoir is high,with MP2 and MP6 values less than 10 cm,and relatively stable.The standard de⁃viations of MP2 and MP6 time series are less than 1 cm,which also reflects that the observation quality of BeiDou sta⁃tion in the reservoir meets the implementation requirements of high-precision,automated Deformation monitoring.